CVE-2021-3654

Nova vulnerability

CVSS

6.1

EPSS

26.8%

EPSS pct

98th

Exploited

No known

A vulnerability was found in openstack-nova's console proxy, noVNC. By crafting a malicious URL, noVNC could be made to redirect to any desired URL.

Affected vendor

Openstack

Affected product

Nova

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Weakness type (CWE)

CWE-601 — Open Redirect

Published

2022-03-02

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, user interaction. Successful exploitation leads to low impact to confidentiality, low impact to integrity.

Its EPSS score of 26.8% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 98% of all scored CVEs.

Check your external exposure to CVE-2021-3654

Confirm whether Openstack Nova is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2021-3654.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-3654

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2021-3654 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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